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Heart|Lab Grown|IGI

1.27ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG788629944

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG788629944

Diamond specifications and retailer prices

From £766 GBP
$1,028 USD
As of October 31, 2026
Save £1,186 GBP (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,952 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.27ct lab-grown heart diamond

This 1.27ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788629944 or 788629944. Listed at 2 retailers as of October 31, 2026, with prices from £766 to £1,952, a £1,186 spread on the same certified stone. Brilliant Earth lists it at £1,952. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788629944
Dimensions6.75 × 7.52 × 4.29 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.75 mm7.52 mm1.27 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788629944
Side View
Table 57.0%Crown 36.9°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 57.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £1,952 GBP|Low: £744 GBP|High: £4,164 GBP|Avg: £1,905 GBP|-23.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2£766 GBP
Retailer 7£1,312 GBP
Retailer 5£1,396 GBP
Retailer 8£1,614 GBP
Retailer 3£1,762 GBP
Retailer 4£1,770 GBP
Brilliant Earth£1,952 GBP
Retailer 6£4,164 GBP

9 data points across 8 retailers

2 retailers£766 GBP to £1,952 GBP

B+
Cheapest Retailer
-
£766 GBP
$1,028 USD
Most Expensive
B
Brilliant Earth
21413086Y · Oct 31
£1,952 GBP
$2,620 USD
View
1 more retailer has this diamond
Prices start from £766 GBPSave up to £1,186 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.27ct Heart
£766 GBP